attach 704 bulkhead to the 715 and 716 seat ribs. had to trim the ribs so they would fit around the snap bushing in 6 places. Clec the 725, 726,and 727 baggage ribs to the 705 spar. Cleco the 705 bulkhead to th 715/716 seat ribs. cleco the 776 skin to the belly. Drill holes to size.